Friction-clutch



F. O; MILLER.

FRICTION GLUTGH.

(No Model.)

,067. Patented Nov. 26, 1889! UNITED STATES PATENT ()EFICE.

FREDRICK C. MILLER, OF NEIVPORT, KENTUCKY.

FRICTION-CLUTCH.

SPECIFICATION forming part of Letters Patent No. 416,067, dated November 26, 1889.

Application filed May 17, 1889. Serial No. 311,124. (No model.)

To aZZ whom it may concern.-

Be it known that I, FREDRIQK C. MILLER, a citizen of the United States, residing at Newport, in the county of Campbell and State of Kentucky, have invented certain new and useful Improvements in Friction-Clutches, of which the following is a specification.

My invention relates to friction-clutches for causing a shaft to be rotated from a belt that passes around a loose pulley on such shaft; and my invention consists in features of novelty to be hereinafter described, and then particularly pointed out in the claims.

I11 order that my invention may be clearly understood, I will proceed to describe the same with reference to the accompanying drawings, in which- Figure I is an edge view of a frictionclutch, looking toward the friction-shoes, the belt-pulley being removed from the shaft. Fig. II is a side elevation showing the improvement. Fig. III is a detail view looking at the face of the dog.

I11 tobacco bu'nching machines, where a bunch is deposited in a matrix of the mold at each revolution of the driving-shafh'it is sometimes desired to stop the machine as each bunch is placed in the mold, or to stop it at any part of the revolution of the driving-shaft, and these are the objects of the invention.

The principal features of the clutch shown are old and well known.

1 represents a loose belt-pulley. 011 the shaft 2 is a sliding sleeve 3, having groove 4 between ribs 5, in which engages a fork at the upper end of a lever 0, having a treadle G for operating the sleeve. Pivoted to the upper end of the lever 6 at Cb is a weighted dog I), that is heavier at its lower end and at its upper has an inclined face 0. The forward end of the sleeve is tapered at 3, with which end engages the rear ends of levers S, that are pivoted intermediately of their ends on bolt 11 and between lugs 9 of casting 10. One lever has, as shown, an inclined face e, with which the inclined face of the dog engages.

IVhen the sleeve 3 is moved forward by pressing on the tr'eadle, the clutch is operated to cause the main shaft to rotate, and when the shaft makes, one revolution the inclined face 6 of lever 8 engages the inclined face of the dog tipping the latter until it can move no farther, at which point the lever 8 presses the dog back in trying to pass, also pressing back the lever 6 and the sleeve 3 with it, automatically disengaging the clutch and stop ping the shaft. be stopped at each revolution. When a continuous motion is desired,if the dog be taken off, the shaft may be started and stopped by first depressing the operating-treadle and then lifting it. The shaft maybe stopped at any point by the proper movement of the treadle without removing the dog. The object of the dog is to provide means to stop the machine operated by the shaft automatically after each revolution, yet permitting the machine'to be stopped at any other point of the revolution by the use of the treadle. Contact-screws 12 13, that are adjustable toward the shaft, pass through the ends of the levers 8 and engage the ends of the arms of the friction shoes. Pivoted at 15 to the brackets 16 of casting 10 are arms 17 having ends 18. Shoes 19, formed with wings 20 of the arms, are engaged with flange 21 of the pulley when the arms are depressed, causing the shaft to be connected, so as to rotate together with the pulley. Passing through slots 22 in the arms are set-screws 23, that engage in brackets 16 and limit the motion of the arms.

The parts are caused to assume normal position by means of spiral springs 24, that are seated in recesses formed in bosses 25 and 26 of the brackets 16 and arms 17, respectively.

My invention is applicable to all frictionclutches that can be worked with a sliding sleeve; but the clutch shown is the preferred form.

Having thus described my invention, What I claim as new therein, and desire to secure by Letters Patent, is

1. In combination with a revolving shaft and clutch mechanism thereon having two moving members, each adapted to engage the other, an operating-lever for moving one of said members, and aweighted dog pivoted to In this way the shaft may said operatinglever and engaged by the other of said members, as explained.

2. In combination with a friction -cluich having a sliding" piece and pivoted levers, one of which is provided with an incline, an operating-lever en gaging said slide, and a dog pivoted thereto and having an incline, the incline of the clutch-lever being adapted to engage the incline of the dog when the clutch is operating and disconnect the clutch at each revolution of the shaft on which the clutch is mounted.

Sfln combination with a revolving shaft and a friction-clutch thereon, a sliding sleeve, a tripping lever against which the sleeve bears, an operating-lever engaging and moving said sleeve, and a dog carried by said operating-lever and engaged by the tripping"- lever during its revolution, substantially as set forth.

FREDRICK O. MILLER.

Vitnesses:

GEORGE PAGAN, SAML. SHAW. 

